I always had great luck with Taste of the Wild Sierra Mountain. The protein is a little high for a puppy at 25%, so I would recommend The Natural Balance LID until at least a year of age however, 18 months is more ideal. I am not a Vet, so please talk to your Vet about any feeding or health questions. These are only my personal opinions.
Please see the latest information on Cardiomyopathy and foods that are causing it in Great Danes.